SOLUTION: Assume that, X is a number of rainy days in December for a certain region, with normal distribution, with average(mean) number of rainy days 6 and with standard deviation of 0.5 da

SOLUTION: Assume that, X is a number of rainy days in December for a certain region, with normal distribution, with average(mean) number of rainy days 6 and with standard deviation of 0.5 da

Algebra.Com

Question 888159: Assume that, X is a number of rainy days in December for a certain region, with normal distribution, with average(mean) number of rainy days 6 and with standard deviation of 0.5 days. Is it 'unusual' to have 8 rainy days in December in that region?
A) Yes B) No
Answer by rothauserc(4718) (Show Source): You can put this solution on YOUR website!
P(X<8) is determined from the z score tables
z score = (8 -6) / .5 = 4
P(X<8) is not defined, therefore the answer is No

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